Which of the following is Incorrect about support and connec

Which of the following is Incorrect about support and connection? O A. For a fixed support, there are three unknows: reaction forces in x and y direction and moment. O B. For a beam siting on a roller, there is only one unknown reaction force at the roller ° C. When two beams are connected by a hinge, there is also a moment created at the hinge. D. If rotation is prevented by the support, a moment must be exerted on the member

Solution

Ans) Option C.

When two beams are connected by a hinge, there is also a moment created at the hinge.This statement is incorrect. Because in hinge only two unknows present. those are vertical force and horizontal force. At hinge moment will be zero.